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3 years ago

For the common-emitter, common-base and emitter-follower amplifier designs,what is the primary benefit of each amplifier?

Physics

1 answer:

kati45 [8]3 years ago

6 0

Answer:

Explanation:

A common emitter amplifier works by inverting. It does have low input impedance. Despite its low input impedance, it poses an otherwise high output impedance.

The common base circuit performs optimally when it acts as a current buffer. It has the ability to take an input current at a low input impedance, and transmit almost the same current to an impedance with a higher output

The primary benefit of emitter follower amplifier is that the transistor is able to provide current and power gain. Although this transistor takes in little current from the input. It still provides an impedance with a low output to a circuit by exercising the output of the follower. This then translates to that the output under load not dropping.

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Hehe i hate being a single girl....what physical properties dose europium have

sasho [114]

Answer:

Europium has a bright shiny surface. it's steel grey and has a melting point of 826 degree Celsius and a boiling point of about 1,489 degree Celsius.

Explanation:

the density is 5.24 grams per cubic centimeter.

3 0

3 years ago

An object possesses both potential (PE) and kinetic (KE) energy. The object’s total mechanical energy is

Nina [5.8K]

Answer: PE+KE

Explanation:

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3 years ago

Read 2 more answers

Mercury is a liquid metal having a density of 13.6 g/mL. What is the

sergij07 [2.7K]

Answer:

$\boxed {\boxed {\sf v \approx 33.088 \ mL}}$

Explanation:

The formula for density is:

$d= \frac{m}{v}$

where m is the mass and v is the volume.

The mass is 0.45 kilograms and the density is 13.6 grams per milliliter. The density is given in grams, so we must convert the mass.

There are 1000 grams in 1 kilogram or $\frac{1000 \ g} {1 \ kg}$ . We can multiply the mass by this ratio.

$0.45 \ kg * \frac{1000 \ g} {1 \ kg} = 0.45 * 1000 \ g = 450 \ g$

Now we have values for the mass and density:

$13.6 \ g/mL =\frac{450 \ g}{ v}$

Cross multiply.

$\frac {13.6 \ g/mL}{1} =\frac{450 \ g}{ v}$

$13.6 \ g/mL * v=450 \ g * 1 \\13.6 \ g/mL * v=450 \ g$

We are trying to find the volume, so we must isolate that variable.

13.6 and v are being multiplied. The inverse of multiplication is division. Divide both sides by 13.6

$\frac {13.6 \ g/mL*v } { 13.6 \ g/mL} = \frac{ 450 \ g} {13.6 \ g/mL}$

$v= \frac{ 450 \ g} {13.6 \ g/mL}$

The grams will cancel.

$v= 33.0882353 \ mL\\v \approx 33.088 \ mL$

The volume is about 33.088 milliliters.

3 0

3 years ago

Particle moves in a circle of radius 90m with a constant speed 25m/s. how many revolution does it make in 30sec

Serggg [28]

Answer:

n =1.33 revolutions

Explanation:

Uniform Circular Motion

The angular speed can be calculated in two different ways:

$\displaystyle \omega=\frac{v}{r}$

Where:

v = tangential speed

r = radius of the circle described by the rotating object

Also:

$\omega=2\pi f$

Where:

f = frequency

Solving for f:

$\displaystyle f=\frac{\omega}{2\pi}$

Since the frequency is calculated when the number of revolutions n and the time t are known:

$\displaystyle f=\frac{n}{t}$

We can solve for n:

n=f.t

The particle moves in a circle of r=90 m with a speed v=25 m/s. Thus the angular speed is:

$\displaystyle \omega=\frac{25}{90}$

$\displaystyle \omega=0.278\ rad/s$

Now we calculate f:

$\displaystyle f=\frac{0.278}{2\pi}$

$f=0.04421\ Hz$

Calculating the number of revolutions:

n = 0.04421*30

n =1.33 revolutions

8 0

3 years ago

People who have been drinking tend to

lilavasa [31]

Well, for one, alcohol impairs someone's ability to perceive distance and see or think clearly. The severity of it depends on the drinker's size. Hope that helped a little.

4 0

4 years ago